Spell lag since last patch?
 

Haven't seen a post about this, but I just installed the new spells_us to play on beta, and almost every spell I cast has a 1-2 second delay at the end. What I mean is the casting bar completes, but the unfilled bar sticks around for a second or two, and then the spell resolves. You can still get interrupted when the spell is "stuck" so it's just like spells take longer to cast now.

It seems like the longer spells take to cast, the longer the delay at the end is.

Edit: Also, spells are getting interrupted at a ridiculous rate, often times when I haven't even moved or been hit.

Nobody in our raid reported this last night, and I had no problems on my cleric.

Not sure how you don't notice this, it affects nearly everything including item clickies.